Modeling and experimental evaluation of vibration reduction of hydraulic-driven joint with a MRF damper

Meng, Xiangming; Zhang, Zhizhong; Sheng, Kaizhang; Chen, Yu; Huang, Hui; Chen, Shumei; Li, Yuzheng

doi:10.1177/1045389x221104416

Cited by 3 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It seriously affects the fast startstop, high-precision positioning and impact resistance of hydraulic actuators [1,2]. In order to solve this problem, according to the advantages of fast response and impact resistance of magnetorheological dampers (MRDs) [3,4], scholars connect the high power density damper with the hydraulic actuator to form a hydraulic damping actuator (HDA) [5]. It improves the underdamped problem of the valve-controlled cylinder system and prolongs the service life of the components.…”

Section: Introductionmentioning

confidence: 99%

A forward-inverse dynamic model for the hydraulic damping(magnetorheological) actuator based on cyclic stress–strain

Ma,

Huang,

Huang

et al. 2024

Smart Mater. Struct.

Self Cite

View full text Add to dashboard Cite

Magnetorheological dampers (MRDs) are applied to hydraulic systems, which not only improve the underdamped characteristics of valve-controlled cylinder systems, but also help hydraulic actuators to resist high load impact. However, the high power density leads to the complexity of the internal flow channel of the damper, which seriously affects the output accuracy of the damping force. It can lead to the fact that existing dynamics models cannot accurately describe the hysteresis characteristics of the MRD. Therefore, this study proposes a simple and general dynamic model of MRD, which solves the problem that existing models are complex and difficult to invert. Firstly, the hydraulic damping actuator (HDA) with the series MRD is taken as the research object. Based on the stress-strain hysteresis characteristics under the cyclic constitutive model, the hyperbolic tangent curve is reorganized and normalized. It can accurately describe the yield formation and yield dissipation stages of the hysteresis loop. Secondly, the relationship between the parameters of the dynamic model and the current is obtained according to the mechanical experimental data. Then the inverse model of the MRD is established by using the method of section-backstepping. Finally, in the static experiment, the Mean Absolute Percentage Error(MAPE) of the force at different velocity is less than 7.5%; In the dynamic experimental test, the MAPE of the force is 9.7%. The inverse dynamics model is verified to have high tracking performance under both static and dynamic forces. And it also indirectly confirms the effectiveness of the forward model.

show abstract

Section: Introductionmentioning

confidence: 99%

A forward-inverse dynamic model for the hydraulic damping(magnetorheological) actuator based on cyclic stress–strain

Ma,

Huang,

Huang

et al. 2024

Smart Mater. Struct.

Self Cite

View full text Add to dashboard Cite

show abstract

Unsteady aerodynamic characteristics of a morphing tail configuration

Jiang,

Chen,

Yang

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

Morphing aircraft is an important trend in the future development of next-generation aircraft. This paper focuses on aircraft with a small aspect ratio flying wing configuration that includes morphing tails. The unsteady aerodynamic characteristics of the morphing tail configuration are numerically simulated using the unstructured overset grid technique and the dual-time method, focusing on the effects of the tail deflection angle over time, Mach number, and side slip angle on the unsteady aerodynamic characteristics of the entire aircraft and tails. The second derivative of the tail deflection angle with time should be continuous, and the maximum angular velocity and maximum angular acceleration should be minimized. The hysteresis loop area is closely related to the Mach number. The sideslip angle aggravates the nonlinearity of the unsteady aerodynamic characteristics of the entire aircraft. The unsteady aerodynamic characteristics during tail morphing are affected by static (wing downwash effect and projected area effect) and dynamic (flow field hysteresis effect, additional motion effect, and wall implication effect) characteristics. The enclosed research provides a reference for the aerodynamic and control system designs of morphing tail configurations.

show abstract

Experimental test and analysis of impact suppression for hydraulic-driven leg using a new MR damper with multi-channels

Huang,

Yang,

et al. 2024

Journal of Vibration and Control

View full text Add to dashboard Cite

When hydraulic-legged robots move under high loads on irregular ground, they are vulnerable to ground impacts. Vibration affects the motion performance of the robot and damages its mechanical structure. This study aims to improve the properties of vibration absorption and impact resistance of hydraulic-legged robots. Because the traditional MR damper (MRD) has small output in finite volume, a novel MRD with a multistage flow channel (MFC-MRD) can output a large damping force designed. First, an MRD prototype was designed for a mechanical leg’s driving joint. Subsequently, the system is analyzed theoretically, and a semi-active control strategy is designed and simulated. Finally, the vibration and impact resistance of the prototype were tested. The experimental results show that in the signal tracking experiment, the maximum overshoot under semi-active control was reduced by 53.0%, and the settling time was reduced by 76.9% compared with the passive control. The impact test reduced the maximum displacement fluctuation by 41.09%, and the buffer time is only 0.24 s.

show abstract

Modeling and experimental evaluation of vibration reduction of hydraulic-driven joint with a MRF damper

Cited by 3 publications

References 20 publications

A forward-inverse dynamic model for the hydraulic damping(magnetorheological) actuator based on cyclic stress–strain

A forward-inverse dynamic model for the hydraulic damping(magnetorheological) actuator based on cyclic stress–strain

Unsteady aerodynamic characteristics of a morphing tail configuration

Experimental test and analysis of impact suppression for hydraulic-driven leg using a new MR damper with multi-channels

Contact Info

Product

Resources

About